The brain region between the forebrain anteriorly and the hindbrain posteriorly, including the tectum dorsally and the midbrain tegmentum ventrally.
hog:0000012 midbrain meningeshog:0000455 lateral wall midbrainhog:0000772 roof plate midbrainhog:0000780 floor plate midbrainhog:0000793 neural fold midbrainhog:0000832 cerebral aqueducthog:0001367 tegmentumhog:0001573 substantia nigrahog:0001591 red nucleusBFO:0000050 part of
tao:0000128tao:0000148